Predictive tube failure detection for pump

A pump system comprising:

• a motor having a drive shaft;
• a pump head comprising:
• a housing;
• a rotor disposed within the housing and connectable to the drive shaft so as to be rotatable therewith;
• and
• a tube within the housing and disposed about the rotor, wherein the rotor is configured to drive fluid through the tube as the rotor rotates, wherein the tube is replaceable when the tube fails;
• and
• a processor configured to determine a predicted number of revolutions of the rotor before the tube fails based on a number n of past tube failure detection (TFD) events, each past TFD event having a corresponding nth TFD value based at least in part on the number of revolutions the rotor had rotated before the tube failed, wherein:
• when n=0, the predicted number of revolutions is set to a putative value, and
• when n=2, the predicted number of revolutions is based at least in part on the second TFD value and the first TFD value.

A pump system comprising:

• a motor having a drive shaft;
• a pump head comprising:
• a housing;
• a rotor disposed within the housing and connectable to the drive shaft so as to be rotatable therewith;
• a tube within the housing and disposed about the rotor, wherein the rotor is configured to drive fluid through the tube as the rotor rotates, wherein the tube is replaceable when the tube fails;
• and
• a tube failure detection sensor, which sends a signal when a tube failure has occurred;
• a display which is configured to display the number of revolutions of the rotor before having received the signal;
• a user input device which permits the user to input the number of revolutions of the rotor before having received the signal;
• and
• a processor configured to determine a predicted number of revolutions of the rotor before the tube fails based on a number n of past tube failure detection (TFD) events, each past TFD event having a corresponding nth INPUT TFD value based at least in part on the input number of revolutions the rotor had rotated before the tube failed, wherein:
• when n=0, the predicted number of revolutions is set to a putative value, and
• when n=1, the predicted number of revolutions is based at least in part on the first INPUT TFD value and the putative value.